What Does 1 Gallon A Day Of Water Really Do To Your Body?

Everywhere I turn, I see that 1 Gallon A Day of Water should be what people strive to. So where is what 1 gallon of water a day, really does to your body.

During my research, the first thing I found was that I needed to point out that drinking too much water too fast can lead to water intoxication. That happens when you intake more than your kidneys can expel, which would be gallons and gallons of water in a short amount of time.